The year I bought the BBS wheels, I couldn't wait and put them on in February. Miraculously I snuck by without getting into trouble. It has been pretty warm out there recently, but I do usually wait till mid April to do the switch.

It was March 15, 2003, at Chas' house....I put on my 17" Borbet Type S wheels with Bridgestone Potenzas. 2 days later the blizzard of 2003 hit. I had to abandon my Passat in a parking lot for the week.

It's best to wait until April, probably mid April. Don't forget we always get one last hurrah in April, usually a small one, but enough to cause Summer rubber riders to end up in ditches.

I just bought a new set Dunlop Sport Maxx for my summer wheels, but I'll wait until the end of the ski season to install them. My Azenis are totally gone, and when I say "totally" I mean 0 mm thread left.By the way Tire Rack now has a $100 rebate on Dunlop Sport Maxx in case anyone is looking for new tires.